Our analysis sheds light on fundamental limits on a quantum detector's performance in adversarial situations. We observe that by varying the threshold, one can depict the detection rate and false alarm rate of a naive quantum detector in terms of a receiver-operational-characteristic (ROC) curve [1]}, which illustrates the detector performance. Compared to the curve for non-adversarial quantum detectors, the naive detector's performances deteriorate significantly as the attacker attenuate the component of the mixed state that is projected on the detection region. Our results have clear implications for developing improved and attack-aware quantum detection systems that can combat strategically-designed quantum operations upon states.
